SlideSMS is a service that lets users send SMS messages worldwide for one flat rate. The network sends out between 80,000 to 100,000 SMS per day across 200 countries. The API gives users an alternative to the SMS gateway, allowing users to send bulk SMS. The API is offered with tiered pricing; public documentation is not available.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.